Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2009.04b
- /
- Pages.49-51
- /
- 2009
Analysis on Eddy Current Losses for Cylindrical Linear Oscillatory Actuator with Halbach Array according to Drive Voltage Waveform
영구자석 Halbach형 원통형 액추에이터의 구동전압 파형에 따른 와전류 손실
- Jang, Seok-Myeong (Chungnam National University) ;
- Kim, Hyun-Kyu (Chungnam National University) ;
- Park, Ji-Hoon (Chungnam National University) ;
- Ko, Kyoung-Jin (Chungnam National University) ;
- Choi, Jang-Young (Halla Climate Control Corp.) ;
- Kim, Il-Jung (Hoseo University)
- Published : 2009.04.23
Abstract
This paper deals with the analysis on eddy current losses for cylindrical linear oscillatory actuator (LOA) with Halbach array mover according to voltage waveform. This paper presents analytical procedures for calculation of eddy current losses using Poynting theorem. On the basis of the magnetic vector potential and a two-dimensional (2-d) cylindrical coordinate system, this paper derived analytical solutions of eddy current tosses using phase current analysis. The eddy current losses of each harmonic obtained by fast Fourier transform (FFT) analysis of phase current are compared with results obtained from finite-element method (FEM). Particularly, this paper shows that the eddy current losses of cylindrical LOA according to square voltage waveform are more significant than those according to sinusoidal voltage waveform.
Keywords